Which scale is used to measure the magnitude of an earthquake?

Where is the focus (hypocenter) of an earthquake located relative to its epicenter?

The specific zone on Earth's surface where earthquake waves are not detected by seismographs is called the:

Which seismic wave causes material particles to vibrate at right angles to the direction of wave propagation?

Richter magnitude in earthquake measurement is calculated as:

Which of the following options specifically represent an 'intensity scale' (measuring qualitative effects and damage on the surface) rather than a magnitude scale for earthquakes? (i) Rossi-Forel scale (ii) Richter scale (iii) Modified Mercalli scale (iv) Pauling scale Choose the correct answer from the codes given below:

Northeast India is recognized as one of the highly seismically active regions globally. Which of the following areas are also widely classified among the world's major highly active seismic zones? (i) Mexico (ii) Taiwan (iii) California (iv) Syria Choose the correct answer from the codes given below:

With reference to seismic waves, consider the following statements: 1. P waves travel through solid rock faster than sound waves travelling through air. 2. S waves travel at about half the speed of P waves. Which of the statements given above is/are correct?

In the asthenosphere, the velocity of shear waves (S-waves) __________, indicating that this zone consists of partially molten rocks.